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LibFlatArray acts as a highly efficient multi-dimensional array of arbitrary objects (array of structs, AoS), but really uses a struct of arrays (SoA) memory layout. It's great for writing vectorized code and its lightning-fast iterators give you access to neighboring elements with zero address generation overhead.

NetCDF (network Common Data Form) is an interface for array-oriented data access and a library that provides an implementation of the interface. The netCDF library also defines a machine-independent format for representing scientific data. Together, the interface, library, and format support the creation, access, and sharing of scientific data. The netCDF software was developed at the Unidata Program Center in Boulder, Colorado.

From the abstract: This Recommendation specifies an abstract modularization of XHTML and an implementation of the abstraction using XML Document Type Definitions (DTDs). This modularization provides a means for subsetting and extending XHTML, a feature needed for extending XHTML's reach onto emerging platforms.

zssh (Zmodem SSH) is a program for interactively transferring files to a remote machine while using the secure shell (ssh). It is intended to be a convenient alternative to scp, allowing to transfer files without having to open another session and re-authenticate oneself. zssh is an interactive wrapper for ssh used to switch the ssh connection between the remote shell and file transfers. Files are transferred through the zmodem protocol, using the rz and sz commands.

Data::Hexdumper provides a simple way to format and display arbitrary binary data in a way similar to how some debuggers do for lesser languages. It gives the programmer a considerable degree of flexibility in how the data is formatted, with sensible defaults. It is envisaged that it will primarily be of use for those wrestling alligators in the swamp of binary file formats, which is why it was written in the first place.

这个 Perl 脚本是设计用来加载很多目录到 Subversion 的。这在你有许多 zip 或 tar.{Z,gz,bz2} 文件包要加载到 Subversion 时很有用。 这个脚本是 Subversion 分发包的一部分，并且大家认为它可以和 subversion 本身使用相同的授权来使用。

[ edited excerpt from www site ] GIMP plugin that creates a white (or black) border around an image that merges in with the image so that on a larger white (or black) background, the image appears to have a ragged border. This is similar to the GIMP's Fuzzy Border, but it adapts its jaggedness to the image. (Also unlike Fuzzy Border, it is deterministic, it does not depend on random number seeds.) The plugin can be found under "Filters > theilr > jagged Border"

tcping does a TCP connect to the given ip/port combination. The user can specify a timeout in seconds. This is useful in shell scripts running in firewalled environments. Often SYNs are just being dropped by firewalls, thus connection establishment will be retried several times (for minutes) until a TCP timeout is reached. With tcping it is possible to check first if the desired port is reachable and then start connection establishment.

This is a thin wrapper around the shellwords.pl package, which comes preinstalled with Perl. This module imports a single subroutine, shellwords(). The shellwords() routine parses lines of text and returns a set of tokens using the same rules that the Unix shell does for its command-line arguments. Tokens are separated by whitespace, and can be delimited by single or double quotes. The module also respects backslash escapes.

Log::Dispatch::Dir provides a simple object for logging to directories under the Log::Dispatch::* system, and automatically rotating them according to different constraints. Each message will be logged to a separate file the directory. Logging to separate files can be useful for example when dumping whole network responses (like HTTP::Response content).